brother are from help that but they have been living here legallyformarthana year. they are going house to house looking for him. this is a massive man hunt. boston schools and businesses are shut down. mass transit is shut down. this effort being described as unprecedented bringing in thousands of police officers. some estimates put the numbers at 9,000 offices involved. these are pictures of the two suspects. you can see one on the left side of your screen wearing a black hat. that suspect was shot and killed by police already. the man in the white hat identified. police say the suspect that was killed had explosives on his body. the second suspect still at large also does. boston police commissioner ed davis says we believe this to be a terrorist. we believe this to be a man who has come here to kill people. we need to get him in custody. we are going to continue to follow this from our newsroom and keep you updated. reporting live from the newsroom claudine wong ktvu channel 2 news. >> thank you. do stay with us throughout the morning. also any time of day everything that is h